Majorana fermions coupled to electromagnetic radiation
We consider a voltage-biased Josephson junction between two nanowires hosting Majorana zero modes which occur as topological protected zero-energy excitations at the junction. We show that two Majorana fermions localized at the junction, despite being neutral particles, interact with the electromagn...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/16/1/015009 |
| _version_ | 1797751545686654976 |
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| author | Christoph Ohm Fabian Hassler |
| author_facet | Christoph Ohm Fabian Hassler |
| author_sort | Christoph Ohm |
| collection | DOAJ |
| description | We consider a voltage-biased Josephson junction between two nanowires hosting Majorana zero modes which occur as topological protected zero-energy excitations at the junction. We show that two Majorana fermions localized at the junction, despite being neutral particles, interact with the electromagnetic field and generate coherent radiation similar to the conventional Josephson radiation. Within a semiclassical analysis of the radiation field, we find that the phase of the radiation gets locked to the superconducting phase difference and that the radiation is emitted at half the Josephson frequency. In order to confirm the coherence of the radiation, we study correlations of the radiation emitted by two spatially separated junctions in a dc-SQUID geometry taking into account decoherence due to spontaneous state-switches as well as due to quasi-particle poisoning. |
| first_indexed | 2024-03-12T16:51:07Z |
| format | Article |
| id | doaj.art-e55a75177a22427eaf995259a43470d1 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:51:07Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-e55a75177a22427eaf995259a43470d12023-08-08T11:21:16ZengIOP PublishingNew Journal of Physics1367-26302014-01-0116101500910.1088/1367-2630/16/1/015009Majorana fermions coupled to electromagnetic radiationChristoph Ohm0Fabian Hassler1Institute for Quantum Information, RWTH Aachen University , D-52056 Aachen, GermanyInstitute for Quantum Information, RWTH Aachen University , D-52056 Aachen, GermanyWe consider a voltage-biased Josephson junction between two nanowires hosting Majorana zero modes which occur as topological protected zero-energy excitations at the junction. We show that two Majorana fermions localized at the junction, despite being neutral particles, interact with the electromagnetic field and generate coherent radiation similar to the conventional Josephson radiation. Within a semiclassical analysis of the radiation field, we find that the phase of the radiation gets locked to the superconducting phase difference and that the radiation is emitted at half the Josephson frequency. In order to confirm the coherence of the radiation, we study correlations of the radiation emitted by two spatially separated junctions in a dc-SQUID geometry taking into account decoherence due to spontaneous state-switches as well as due to quasi-particle poisoning.https://doi.org/10.1088/1367-2630/16/1/015009 |
| spellingShingle | Christoph Ohm Fabian Hassler Majorana fermions coupled to electromagnetic radiation New Journal of Physics |
| title | Majorana fermions coupled to electromagnetic radiation |
| title_full | Majorana fermions coupled to electromagnetic radiation |
| title_fullStr | Majorana fermions coupled to electromagnetic radiation |
| title_full_unstemmed | Majorana fermions coupled to electromagnetic radiation |
| title_short | Majorana fermions coupled to electromagnetic radiation |
| title_sort | majorana fermions coupled to electromagnetic radiation |
| url | https://doi.org/10.1088/1367-2630/16/1/015009 |
| work_keys_str_mv | AT christophohm majoranafermionscoupledtoelectromagneticradiation AT fabianhassler majoranafermionscoupledtoelectromagneticradiation |